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101374 (1998 UT9)
Classification: Main-belt Asteroid          SPK-ID: 2101374
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05726822131960004 4.0724e-08  
a 2.686836153887025 1.4963e-08 au
q 2.53296582637672 1.1577e-07 au
i 1.627186076819185 5.1266e-06 deg
node 199.7722524713174 0.00013528 deg
peri 247.4051915408183 0.00014399 deg
M 298.9934253889803 5.033e-05 deg
tp 2459473.105329614624
(2021-Sep-15.60532961)
0.00022498 TDB
period 1608.644958137639
4.40
1.3437e-05
3.679e-08
d
yr
n .223790835994525 1.8694e-09 deg/d
Q 2.84070648139733 1.582e-08 au
  Orbit Determination Parameters
   # obs. used (total)      584  
   data-arc span      8154 days (22.32 yr)  
   first obs. used      1998-10-16  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:29  

Additional Information
 Earth MOID = 1.54949 au 
 Jupiter MOID = 2.26843 au 
 T_jup = 3.371 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.91   n/a E2021B55  
rotation period rot_per 0.92 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

101374 (1998 UT9)          Discovered 1998-Oct-16 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 UT9 = 2003 WQ136 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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